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Fri, 14 Feb 2020 16:22:07 +0000 (UTC) Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4CF48246D8; Fri, 14 Feb 2020 16:22:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581697327; bh=FcvBkKpzEgcoIU2wYmSoYkgz1dx3PGPVxKSmKX7uaaA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pfv3GFDjRAbHVAFQj6jBUhzX9MdPyDKcjUQjRjh34cgyC1EiwHyY+xAcq+QwB8kLW stJ4A/idyWW7Qqtq1IpIJ/PSMbfFHqm/PYbWg21VBqbXhnlyYLsfzkASQPFw6OBGJ4 Up0Cjn1pFxHlyE0WCD9GzVRWlshHeA2glbLZRQDo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 035/141] drm/amdgpu: remove always false comparison in 'amdgpu_atombios_i2c_process_i2c_ch' Date: Fri, 14 Feb 2020 11:19:35 -0500 Message-Id: <20200214162122.19794-35-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200214162122.19794-1-sashal@kernel.org> References: <20200214162122.19794-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alex Deucher , yu kuai , dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, Sasha Levin Content-Type: text/plain; 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Fri, 14 Feb 2020 16:22:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581697327; bh=FcvBkKpzEgcoIU2wYmSoYkgz1dx3PGPVxKSmKX7uaaA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pfv3GFDjRAbHVAFQj6jBUhzX9MdPyDKcjUQjRjh34cgyC1EiwHyY+xAcq+QwB8kLW stJ4A/idyWW7Qqtq1IpIJ/PSMbfFHqm/PYbWg21VBqbXhnlyYLsfzkASQPFw6OBGJ4 Up0Cjn1pFxHlyE0WCD9GzVRWlshHeA2glbLZRQDo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: yu kuai , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 4.9 035/141] drm/amdgpu: remove always false comparison in 'amdgpu_atombios_i2c_process_i2c_ch' Date: Fri, 14 Feb 2020 11:19:35 -0500 Message-Id: <20200214162122.19794-35-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200214162122.19794-1-sashal@kernel.org> References: <20200214162122.19794-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: yu kuai [ Upstream commit 220ac8d1444054ade07ce14498fcda266410f90e ] Fixes gcc '-Wtype-limits' warning: drivers/gpu/drm/amd/amdgpu/atombios_i2c.c: In function ‘amdgpu_atombios_i2c_process_i2c_ch’: drivers/gpu/drm/amd/amdgpu/atombios_i2c.c:79:11: warning: comparison is always false due to limited range of data type [-Wtype-limits] 'num' is 'u8', so it will never be greater than 'TOM_MAX_HW_I2C_READ', which is defined as 255. Therefore, the comparison can be removed. Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)") Signed-off-by: yu kuai Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/atombios_i2c.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c index b374653bd6cf3..741bd1e52699b 100644 --- a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c +++ b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c @@ -69,11 +69,6 @@ static int amdgpu_atombios_i2c_process_i2c_ch(struct amdgpu_i2c_chan *chan, memcpy(&out, &buf[1], num); args.lpI2CDataOut = cpu_to_le16(out); } else { - if (num > ATOM_MAX_HW_I2C_READ) { - DRM_ERROR("hw i2c: tried to read too many bytes (%d vs 255)\n", num); - r = -EINVAL; - goto done; - } args.ucRegIndex = 0; args.lpI2CDataOut = 0; } -- 2.20.1